package com.lzh.exer4;

public class Bank {
	
	private Customer[] customers;//存放多个客户的数组
	private int numberOfCustomers;//记录客户的个数
	
	public Bank() {
		customers = new Customer[10];
	}
	//添加客户
	public void addCustomer(String f,String l) {
		Customer cust = new Customer(f,l);
//		customers[numberOfCustomers] = cust;
//		numberOfCustomers++;
		//或者
		customers[numberOfCustomers++] = cust;
	}
	
	//获取客户的个数
	public int getNumberOfCustomer() {
		return numberOfCustomers;
	}
	
	//获取指定位置上的客户
	public Customer getCustomer(int index) {
		//	return customers[index];可能报异常
		if(index >=0 && index < numberOfCustomers )  {
			return customers[index];
		}
		return null;
	}
	
	
}
